......DE....FRGB..........SE......................R0383559EUROPEAN PATENT APPLICATIONA319910821EP90301544.419900214enenen17744/89 U19890216JP17745/89 U19890216JP19910821199134199008221990345 5H 02J 7/00 A 5H 01M 2/10 B 5H 01M 10/46 BdeTragbare LeistungsversorgungenPortable power supplyfrAlimentation de puissance portative1NINTENDO CO., LTD.00769161J.19834 EP60, Fukuinekamitakamatsu-cho, Higashiyama-kuKyoto-shi, Kyoto-fuJPShirai, Ichiro, c/o Nintendo Co.,Ltd.60, Fukuinekamitakamatsu-cho Higashiyama-kuKyoto-shi, Kyoto-fuJPSakuragi, Kazuhiko, c/o Kyushu Hitachi Maxell Ltd.4680 Ooaza Igata, Houjo-machiTagawa-gun, Fukuoka-kenJPMilhench, Howard Leslieet al00033863R.G.C. Jenkins & Co. 26 Caxton StreetLondon SW1H 0RJGBDEFRGBSE19910821199134

A portable power supply (1) has a body case (2), an attaching portion (13), an input portion (5), a voltage lowering portion (4), a storage battery (3), an output portion (6) and heat radiating means (15). The body case (2) has two opposing major surfaces and two sections divided by a prescribed reference line (N.A). The attaching portion (13) is provided on one of the major surfaces for detachably attaching the power supply to a human body (A). The input portion (5) and the output portion (6) are positioned in one of the sections to be exposed from the body case (2). The input portion (5) is connected to a commercial power source, and the output portion (6) is connected to a prescribed electronic device. The voltage lowering portion (4) lowers power from the input portion (5). The storage battery (3) is charged by the output from the voltage lowering portion (4). The heat radiating means (15) is provided on the other one of the major surfaces of the body case (2) and makes the heat radiation of the other one of the major surfaces higher than that of the one of the major surfaces. Center of gravity of the portable power supply (1) is positioned in the other one of the two sections.